What's the general wisdom on choosing a Metalite M5 versus Metalite M7 for alto sax (for those who must buy without trying first)? Which reed model and strength are folks using with either? Has anyone tried each of these with, say, a Vandoren Java (Green) #3? Do people feel the M5 is too "closed"? Is the M7 too "open"?Just bought an M5 Alto and It is really good - just been doing a comparison with my Jumbo Java A55.